• 15 Posts
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Joined 3 years ago
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Cake day: June 12th, 2023

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  • The DHT11 has been replaced twice with similarly-priced but more accurate models, first the DHT22 and then the AHT20. In my experience, the AHT20 is a lot better than the DHT22, mainly because its power consumption is far lower, so it doesn’t mess up its readings by getting hot.

    Also, at that size, I’d be very surprised if the dehumidifier has a compressor. It’s much more likely that it’s got a Peltier plate, and they’re not very good. They use a lot of power to develop and maintain a fairly small temperature difference, so if they’re in a confined space, they heat up the air quite a bit, and then the water from their tank will more easily evaporate.

    If you’re willing to spend some money, a solid state ion membrane dehumidifier might be better for a small cabinet than a compressor-based one, as it’ll be easy to ensure the water goes out of the cabinet instead of into a container that can’t be emptied without opening the cabinet and letting more humidity in. They’re definitely not cheap, though. I think they’re still under patent as there’s only one manufacturer that I can find, so maybe they’re the dehumidifier of the future even if they’re not suitable right now.


  • There was a while where it obviously met and exceeded the definition in the UN Genocide Convention, but a lot of people refused to acknowledge it might be a genocide because the UN had not yet declared it to be one. The UN is notoriously slow at that kind of thing, though, especially when a powerful country wants them to be slow.


  • If it’s the problem that I’ve seen people complain about in the past, it’s effectively the same as HTTPS ‘not supporting’ end to end encryption because it runs over IP and IP packets contain the IP address of where they need to go, so someone can see that two IP addresses are communicating, which is unavoidable as otherwise there’s nothing to say where the data needs to go, so no way for it to get there. Someone did a blog post a couple of years ago claiming Matrix was unsecure as encrypted messages had their destination homeserver in plaintext, but that doesn’t carry any information that isn’t implied by the fact that the message is being sent to that homeserver’s IP.




  • When it’s hot, it stinks of hot ABS, and it dissolves in acetone. I’ve read that sometimes budget filament manufacturers will use the same pigment across their whole material range, even if it’s not capable of withstanding the print temperatures of some of them, but it’s ABS+ rather than pure ABS, so it could be full of mystery additives that don’t handle heat well, too.

    There’s not much point using it as glue as I’m not going to get through a whole kilo worth of ABS glue, and produce more than enough ABS scraps from test prints and support to always make a colour-matched glue anyway.






  • I reckon it depends on how warm someone’s home is and how good their circulation is. If I don’t have shoes on indoors, then for half the year it feels like my feet have been stabbed because they get so cold (slippers are not enough), but I don’t wear the same shoes indoors as outdoors. I suspect that if we set the heating higher and the house wasn’t constructed in a way that makes the floor always much colder than a few inches above the floor, this wouldn’t be a problem.



  • They used ballistic gelatine dummies for a while, then decided that they weren’t a good model of most injuries, so had an episode where they designed a new dummy by buying human bones and breaking them to see how much force they could take, then picked out a material with similar properties (which surprisingly ended up being wood), and from then on, built fake skeletons to put in the gelatine dummies.

    IIRC, the bones were bought from a shop that just sold human bones. They’d ended up there nominally because their previous owners’ wills had permitted it. E.g. lots of people want their skull to be used in productions of Hamlet, so drama groups often end up owning real skulls. I’m not sure whether Mythbusters was buying things from a general-use shelf or if they counted as medical science due to doing some kind of experiment - the US military counts even if they’re just using corpses for target practice.